CN106289215B - A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure - Google Patents
A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure Download PDFInfo
- Publication number
- CN106289215B CN106289215B CN201610918610.9A CN201610918610A CN106289215B CN 106289215 B CN106289215 B CN 106289215B CN 201610918610 A CN201610918610 A CN 201610918610A CN 106289215 B CN106289215 B CN 106289215B
- Authority
- CN
- China
- Prior art keywords
- overarm
- resilient support
- shaped
- spoke
- anchor point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/567—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode
- G01C19/5677—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially two-dimensional vibrators, e.g. ring-shaped vibrators
- G01C19/5684—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode of essentially two-dimensional vibrators, e.g. ring-shaped vibrators the devices involving a micromechanical structure
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
- Micromachines (AREA)
Abstract
The present invention relates to MEMS annular vibration gyro, specifically a kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure.The present invention solves the problems, such as that existing MEMS annular vibration gyro sensitivity is low.A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure, including the resilient support overarm of circular tuned mass, cylindrical center anchor point, spoke-like；Wherein, cylindrical center anchor point is located at the inner cavity of circular tuned mass, and the axis of cylindrical center anchor point and the axis of circular tuned mass overlap；The number of spoke-like resilient support overarm is eight, and eight spoke-like resilient support overarms surround the axis equidistant arrangement of cylindrical center anchor point；Each spoke-like resilient support overarm is made of the first sheet like flexible support overarm, the overarm of the first U-shaped resilient support, the overarm of the second U-shaped resilient support, the support overarm of the second sheet like flexible.The present invention is suitable for the fields such as weapon guidance, aerospace, biomedicine, consumer electronic.
Description
Technical field
The present invention relates to MEMS annular vibration gyro, specifically a kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance
Minor structure.
Background technique
MEMS annular vibration gyro is a kind of angular movement sensor based on Coriolis effect, has small in size, matter
It measures that light, low in energy consumption, the service life is long, the advantages that can be mass, is cheap, is widely used in weapon guidance, aerospace, biology
The fields such as medicine, consumer electronic have extremely broad application prospect.The concrete operating principle of MEMS annular vibration gyro is such as
Under: when not having turning rate input, the harmonic oscillator of MEMS annular vibration gyro works under driven-mode, MEMS annular vibration
The output of gyro is zero.When there is turning rate input, the harmonic oscillator of MEMS annular vibration gyro works under sensed-mode, MEMS
Annular vibration gyro measures input angular velocity in real time.However practice have shown that, existing MEMS annular vibration gyro is due to its harmonic oscillator
Geometry limited, the low problem of generally existing sensitivity.Thus it is necessary to invent a kind of completely new resonance minor structure, with solution
The low problem of certainly existing MEMS annular vibration gyro sensitivity.
Summary of the invention
The present invention is low in order to solve the problems, such as existing MEMS annular vibration gyro sensitivity, provides a kind of holohedral symmetry U-shaped
Beam MEMS annular vibration gyro resonance minor structure.
The present invention is achieved by the following technical scheme:
A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure, including circular tuned mass, it is cylindric in
Heart anchor point, spoke-like resilient support overarm；
Wherein, cylindrical center anchor point is located at the inner cavity of circular tuned mass, and the axis of cylindrical center anchor point with
The axis of circular tuned mass overlaps；The number of spoke-like resilient support overarm is eight, and eight spoke-like elasticity
Support overarm surrounds the axis equidistant arrangement of cylindrical center anchor point；
The overarm of each spoke-like resilient support is by the first sheet like flexible support overarm, the overarm of the first U-shaped resilient support, the
The overarm of two U-shapeds resilient support, the support overarm of the second sheet like flexible are constituted；First sheet like flexible support overarm tail end with it is cylindric
The lateral surface of center anchor point is fixed；First U-shaped resilient support overarm tail end and the second U-shaped resilient support overarm tail end with
The head end of first sheet like flexible support overarm is fixed；Second sheet like flexible support overarm tail end respectively with the first U-shaped elasticity branch
The head end of the head end and the resilient support overarm of the second U-shaped that support overarm is fixed；The overarm of first U-shaped resilient support and the second U-shaped elasticity
Support overarm is enclosed closed round rectangle jointly；The head end and circular tuned mass of second sheet like flexible support overarm
Medial surface fix.
When work, the lower end surface of cylindrical center anchor point is bonded with the substrate of glass of MEMS annular vibration gyro.It is circular
The lateral surface of tuned mass is equipped with the arc-shaped electrode that eight central angles are 40 degree, eight arc-shaped electrodes equally with MEMS annular vibration
The substrate of glass of gyro is bonded, and the position of eight arc-shaped electrodes and the position of eight spoke-like resilient support overarms correspond
(as shown in Figure 3).Wherein four arc-shaped electrodes are as driving electrodes, and four additional arc-shaped electrode is as detecting electrode, and four
Driving electrodes and four detecting electrodes are staggered.The present invention maintains four waves that circumferential wave number is 2 under the action of control system
Abdomen vibration.Specific work process is as follows: when not having turning rate input, the present invention is under the excitation of four driving electrodes, to drive
Dynamic model state makees four antinode bending vibration (as shown in Figure 4, Figure 5) in face, and four detecting electrodes are located at four antinode bending vibrations at this time
Node at, the output of MEMS annular vibration gyro is zero.When there is turning rate input, the present invention is in coriolis force coupling
Under, four antinode bending vibration (as shown in Figure 6, Figure 7) in face is made with sensed-mode, it is curved to be located at four antinodes for four detecting electrodes at this time
At the antinode of Qu Zhendong, and Oscillation Amplitude is related to input angular velocity, and MEMS annular vibration gyro measures input angular velocity in real time.
Based on the above process, a kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure of the present invention is logical
It crosses using holohedral symmetry U-shaped girder construction, has following advantage: first, the present invention is in two operation modes (driven-mode and detections
Mode) under tuned mass it is equal, thus on the one hand make two operation modes (driven-mode and sensed-mode) resonance frequency
Rate matching is easier, and on the other hand realizes the damping Natural matching of two operation modes (driven-mode and sensed-mode).Its
Two, resonance structure of the invention is an entirety, so that the impact resistance of MEMS annular vibration gyro greatly improves.Cause
This, drift caused by the present invention is greatly reduced because of fabrication error and variation of ambient temperature, to effectively increase MEMS annular
The sensitivity of oscillation gyro.
Structure of the invention is reasonable, ingenious in design, efficiently solves the problems, such as that existing MEMS annular vibration gyro sensitivity is low,
Suitable for fields such as weapon guidance, aerospace, biomedicine, consumer electronics.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of spoke-like resilient support overarm in the present invention.
Fig. 3 is working condition of the invention with reference to figure.
Fig. 4 is vibration shape schematic diagram of the present invention under driven-mode.
Fig. 5 is vibration shape schematic diagram of the present invention under driven-mode.
Fig. 6 is vibration shape schematic diagram of the present invention under sensed-mode.
Fig. 7 is vibration shape schematic diagram of the present invention under sensed-mode.
In figure: 1- annular shape tuned mass, 2- cylindrical center anchor point, the resilient support overarm of 3- spoke-like, 31- first
Shape resilient support overarm, the resilient support overarm of the first U-shaped of 32-, the resilient support overarm of the second U-shaped of 33-, the second sheet like flexible of 34-
Support overarm, 4- arc-shaped electrode.
Specific embodiment
A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure, including it is circular tuned mass 1, cylindric
Center anchor point 2, spoke-like resilient support overarm 3；
Wherein, cylindrical center anchor point 2 is located at the inner cavity of circular tuned mass 1, and the axis of cylindrical center anchor point 2
It overlaps with the axis of circular tuned mass 1；The number of spoke-like resilient support overarm 3 is eight, and eight spoke-likes
Resilient support overarm 3 surrounds the axis equidistant arrangement of cylindrical center anchor point 2；
Each spoke-like resilient support overarm 3 supports overarm the 31, first U-shaped resilient support overarm by the first sheet like flexible
32, the second U-shaped resilient support overarm the 33, second sheet like flexible support overarm 34 is constituted；First sheet like flexible support overarm 31
The lateral surface of tail end and cylindrical center anchor point 2 is fixed；The tail end and the second U-shaped elasticity branch of first U-shaped resilient support overarm 32
Head end of the tail end of support overarm 33 with the first sheet like flexible support overarm 31 is fixed；The tail of second sheet like flexible support overarm 34
Head end of the end respectively with the head end of the first U-shaped resilient support overarm 32 and the second U-shaped resilient support overarm 33 is fixed；First U-shaped
Resilient support overarm 32 and the second U-shaped resilient support overarm 33 are enclosed closed round rectangle jointly；Second sheet like flexible
The head end of support overarm 34 and the medial surface of circular tuned mass 1 are fixed.
When it is implemented, the size of eight spoke-like resilient support overarms 3 is consistent, and eight spoke-like resilient support overarms
3 height is equal with the height of circular tuned mass 1.2, eight circular tuned mass 1, cylindrical center anchor point spokes
Shape resilient support overarm 3 is all made of monocrystalline silicon piece and is process, and circular tuned mass 1, cylindrical center anchor point 2, eight
Spoke-like resilient support overarm 3 is integrated using Bulk micro machining manufacture.
Claims (1)
1. a kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure, it is characterised in that: including circular tuned mass
(1), cylindrical center anchor point (2), spoke-like resilient support overarm (3)；
Wherein, cylindrical center anchor point (2) is located at the inner cavity of circular tuned mass (1), and the axis of cylindrical center anchor point (2)
Line and the axis of circular tuned mass (1) overlap；The number of spoke-like resilient support overarm (3) is eight, and eight
Spoke-like resilient support overarm (3) surrounds the axis equidistant arrangement of cylindrical center anchor point (2)；
Each spoke-like resilient support overarm (3) supports overarm (31), the resilient support overarm of the first U-shaped by the first sheet like flexible
(32), the second U-shaped resilient support overarm (33), the second sheet like flexible support overarm (34) are constituted；The support of first sheet like flexible is outstanding
The tail end of beam (31) and the lateral surface of cylindrical center anchor point (2) are fixed；The tail end of first U-shaped resilient support overarm (32) and the
The tail end of two U-shapeds resilient support overarm (33) supports the head end of overarm (31) to fix with the first sheet like flexible；Second sheet bullet
Property support overarm (34) tail end respectively with the first U-shaped flexibly support overarm (32) head end and the second U-shaped resilient support hang oneself from a beam
(33) head end is fixed；First U-shaped resilient support overarm (32) and the second U-shaped resilient support overarm (33) are enclosed envelope jointly
The round rectangle closed；The head end of second sheet like flexible support overarm (34) and the medial surface of circular tuned mass (1) are fixed；
The size of eight spoke-likes resilient support overarm (3) is consistent, and the height of eight spoke-likes resilient support overarms (3) with
The height of circular tuned mass (1) is equal；
Circular tuned mass (1), cylindrical center anchor point (2), eight spoke-like resilient support overarms (3) are all made of monocrystalline silicon
Piece is process, and annular shape tuned mass (1), cylindrical center anchor point (2), eight spoke-likes flexibly support overarm (3) and adopt
It is manufactured and is integrated with Bulk micro machining；
The lower end surface of cylindrical center anchor point is bonded with the substrate of glass of MEMS annular vibration gyro；Outside circular tuned mass
Side is equipped with the arc-shaped electrode that eight central angles are 40 degree, glass base of eight arc-shaped electrodes equally with MEMS annular vibration gyro
Bottom bonding, and the position of eight arc-shaped electrodes and the position of eight spoke-like resilient support overarms correspond；Wherein four arcs
Shape electrode is as driving electrodes, and four additional arc-shaped electrode is as detecting electrode, and four driving electrodes and four detecting electrodes
It is staggered；
When not having turning rate input, it is curved that the present invention makees four antinodes in face under the excitation of four driving electrodes, with driven-mode
Qu Zhendong, four detecting electrodes are located at the node of four antinode bending vibrations at this time, and the output of MEMS annular vibration gyro is zero；
When there is turning rate input, the present invention makees four antinode bending vibration in face under coriolis force coupling, with sensed-mode, at this time
Four detecting electrodes are located at the antinode of four antinode bending vibrations, and Oscillation Amplitude is related to input angular velocity, the vibration of MEMS annular
Dynamic gyro measures input angular velocity in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918610.9A CN106289215B (en) | 2016-10-21 | 2016-10-21 | A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610918610.9A CN106289215B (en) | 2016-10-21 | 2016-10-21 | A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106289215A CN106289215A (en) | 2017-01-04 |
| CN106289215B true CN106289215B (en) | 2019-03-05 |
Family
ID=57719285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610918610.9A Active CN106289215B (en) | 2016-10-21 | 2016-10-21 | A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106289215B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3665437B1 (en) * | 2017-08-08 | 2023-05-03 | HRL Laboratories, LLC | High quality factor mems silicon flower-of-life vibratory gyroscope |
| CN109781086A (en) * | 2017-11-15 | 2019-05-21 | 北京自动化控制设备研究所 | A kind of annular microelectromechanicgyroscope gyroscope sensitive structure |
| CN109900262B (en) * | 2019-04-08 | 2021-08-10 | 瑞声科技(新加坡)有限公司 | Gyroscope |
| CN112857352B (en) * | 2021-04-15 | 2022-03-25 | 中北大学 | Redundant double-ring type micromechanical gyroscope structure with good impact resistance |
| CN113753843B (en) * | 2021-07-04 | 2024-01-16 | 西北工业大学 | MEMS ring resonator with high vibration mode stability |
| CN114485600B (en) * | 2022-03-15 | 2022-09-13 | 重庆天箭惯性科技股份有限公司 | Integrated gyro with multi-anchor-point high-strength multi-fluctuation annular structure |
-
2016
- 2016-10-21 CN CN201610918610.9A patent/CN106289215B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| Structure design and simulation of MEMS vibrating ring gyroscope;KOU Zhi-wei etal.;《Journal of Measurement Science and Instrumentation》;20160331;第7卷(第1期);第78-83页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106289215A (en) | 2017-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106289215B (en) | A kind of holohedral symmetry U-shaped beam MEMS annular vibration gyro resonance minor structure | |
| CN106289214B (en) | A kind of anti-HI high impact S-shaped spring beam MEMS annular vibration gyro resonance minor structure | |
| CN106643685A (en) | Brand new U-shaped foldable beam silicon micro-annular vibration gyroscope | |
| CN104215235B (en) | A kind of novel bell-shaped vibrator type angular rate gyroscope | |
| TWI647425B (en) | Improved gyroscope structure and gyroscope | |
| CN106643686A (en) | Silicon microring vibrating gyroscope harmonic oscillator structure of all symmetrical folding elastic beam | |
| CN104165624B (en) | Sidewall piezoelectric-driven ring vibrating gyroscope and driving and detection method | |
| CN102353369B (en) | Combination type quartz cup-shaped fluctuation top harmonic oscillator | |
| CN102305627B (en) | All solid dual-axis gyroscope with discoid piezoelectric vibrator | |
| CN112857351B (en) | Double-ring type micromechanical gyroscope structure with wide range and high precision | |
| CN112857352B (en) | Redundant double-ring type micromechanical gyroscope structure with good impact resistance | |
| CN102297690A (en) | Piezoelectricity driven capacitance detecting two-axis gyroscope | |
| CN102980565B (en) | Circular ring fluctuation micromechanical gyroscope and preparation method thereof | |
| CN101261126B (en) | Micro- solid mode gyroscope | |
| CN101363731B (en) | Rock quartz micro mechanical gyroscope based on shear stress detection and method for making same | |
| CN103697875B (en) | Pin piezoelectric solid fluctuation mode vectors correlation gyro | |
| CN105043369A (en) | Outer edge fixed type multi-ring gyroscope subjected to laser processing and piezoelectric actuation | |
| CN106100440B (en) | One kind being based on out-of-plane bending vibration mode high speed rotation ultrasound electric machine | |
| CN103575262B (en) | Wave quality and strengthen piezoelectric acoustic solid fluctuation disc micro-gyroscope | |
| CN106123884A (en) | A kind of highly sensitive MEMS annular vibration gyro harmonic oscillator structure | |
| CN104197919A (en) | Vertical-through-supported glass-metal hemispherical resonant microgyroscope | |
| CN103227584B (en) | A kind of bi-directional drive linear ultrasonic motor | |
| CN101738184B (en) | Shearing stress detection-based quartz micromechanical gyro with criss-cross structure | |
| CN114543782B (en) | Micromechanical gyroscope structure with attitude correction function and built-in correction electrode | |
| CN114543781B (en) | Micromechanical gyroscope structure with attitude correction function and external correction electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |